The Kuju Volcano Group consists of more than ten cones and lava domes NE of Aso caldera. Mimatayama, seen here at the NW side of the complex, has a summit lava dome. The first recorded eruptions were of phreatic or hydrothermall activity in the 17th and 18th centuries. Many hot springs and hydrothermal fields are located at the Kuju complex. A fumarole on Hosho lava dome was the site of a sulfur mine for at least 500 years.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Kujusan